Improvement in stave-jointer



waited registra ROBFRT W.'GEORGF, OF BOSTON, MASSACHUSETTS.

Letters Patent No. 15,064, (lated July 5, 1870.

The Schedule rei-'erred to in these Letters Patent and making part o thesame.

To all whom it may concern:

. I, ROBERT W. GEORGE, of Boston, in the county of Suffolk and StatelofMassachusetts, have invented certain new and useful Improvements instave-Jointers, of wlneh the following is a specitication.

Nature and Oly'ect of the Invention..

' The nature of my invention consists in combining,

with a stationary automatic clamp, a frame carrying two circular saws,inclined to each other, to suit the quality of the work to be done;also, in the arrangement-of' parts, the object heilig to render thelabor ofl tending of the machine muehless, and to increase the amountof` work donc by the-machine in a given time.

Description of the Acconqiany'ing Drawing.

Figure 1 represents a perspective view of my iuvention.

Figure 2 is a plan of the same.

Figure 3 is a vertical section.

Figure 4 is an enlarged view of part .of the clamping device.

General Description.

I construct my machine as follows:

A B is the main frame or body ofthe machine.

Lx is a form, or curved-shaped bar, which is attached to the main frameA B by means of' the uprights l l', and forms the lower part of theclamp for bending the stave, and holding it in position while beingoperated upon by the jointing-saws D D.

L forms the upper part of the clamp, and is connected with the frame L2L L, the whole being, so arranged that it may move up and down, and thusholds or releases the stave.

'lhe frame L2 L4 L2, carrying the upper part L -of Athe clamp, may beoperated by foot-power, .or by an automatic device, as hereinafterdescribed.

G C' is a sliding frame or carriage, and carries upon it two circularsaws, so arranged and set that, when tu operation, they movelongitudinally along the edge ofthe stave, and joint it to tlie requiredangle.

This carriage C C' has attached to it two ratchets F F', figs. 1 and 3,into which the pinion E7, figs. 1 and 3 operates alternately.

'lhis pinion 7 is hung on a swinging frame, E, figs. 2 and 3, so that itmay be moved up and down by the lever K, that is, it may be thrown intogear with the ratchet F', and thus cause the frame 'C C to move forward,or thrown into gear with the ratchet F, as shown in' fig. 3, and causeit to retreat, or the pinion may be placed' midway between the tworatchets. 'lhen the frame O will notpartake of the luotion ofthe otherparts ofthe machine.

The wheel E is the driving-wheel of' the machine, and it transmits itsmotion by means of' the belt El i E, figs. l and 3, to the wheel E2-E5D2.

rlhe -belt D2, fig. 1, drives the saw D1, while the belt Di, figs. 1 and2, drives the saw D.

The belt H, fig. 2, drives the pinion E2, fig. 3. '.lhe pulley. E5,figs. 2 and 3, serves to drive the shaft E, and, also, as au idler forthe belt El E* E, fig. 3, to take .it up while the frame C O is passingback' and forth.

lhe levers M and M2 are pivoted to the frame 'A v B, and are soarranged, in connection with the frame L2 L4 L, that, when the upperends are thrown backward by the pin N in the sliding frame O C', theywill lift the clamp-frame upward, andv thus release the stave frompressure.

These parts are so arranged that the start N only comes in contact withthe levers when the carriage O C' is at its limit of motion, either inone direction or Athe other.

102 lo are adj ustablc gauges, and are held in position by theclamp-screws I and P,'fig. 4.

It, fig. 4, isa 'gauge-piu, fitted loosely in 'thcpart L, and is helddown by the spring S. This pin serves as a gauge for fixing thelongitudinal position of .the stave, when it is placed in the clamp.

To use my machine, I proceed as follows:

The carriage C C is moved so that the two 'saws D and Dl occupy aposition at one end of the clamp, the clamp being open, that i's, thepart L will be elevated; now the stave is put in position, and the leverK K2 moved so as to draw the pinion E2 into contact with the ratchet For F', as the ease may be. This will start the carriage, which, in itsturn, will allow the clamp Lto descend upon the stave and hold it inposition, while the continued motion of' the frame C C and the saws D Dlwill joint the edges of the staves.

I claim as my invention- 1. rlhe combination of the clamp L Ll L2 Lawith the sliding saw-frame G C', and saws D D2, operating as described,and for the purpose set forth.

2. The combination ofthe piu N with the lever M and clamp-frame- L2 L*L, substantially as described, and for the purpose set forth.

ROBERT W'. GEORGE.

Witnesses FRANK G. PARKER, WILLIAM EnsoN.

